CN105915848A - Monitoring display screen, display control terminal, terminal conversion device and video wall networking system - Google Patents
Monitoring display screen, display control terminal, terminal conversion device and video wall networking system Download PDFInfo
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- CN105915848A CN105915848A CN201610298982.6A CN201610298982A CN105915848A CN 105915848 A CN105915848 A CN 105915848A CN 201610298982 A CN201610298982 A CN 201610298982A CN 105915848 A CN105915848 A CN 105915848A
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- display screen
- signal
- monitoring display
- audio
- configuration information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
Abstract
The present invention provides a monitoring display screen, a display control terminal, a terminal conversion device and a video wall networking system. The monitoring display screen comprises a screen display main chip, a display screen panel, a signal receiving unit and a signal processing unit. The signal receiving unit is configured to receive RGMII signals sent by the display control terminal through a twisted pair and send the RGMII signals to the signal processing unit; the signal processing unit is configured to analyze the RGMII signals to obtain audio and video data and monitoring display screen configuration information included therein, convert the monitoring display screen configuration information to UART signals, convert the audio and video data to TMDS signals and send the UART signals and the TMDS signals to the screen display main chip; and the screen display main chip is configured to configure the display screen panel according to the UART signals and display the TMDS signals on the configured display screen panel. According to the embodiment of the invention, the wiring of the video wall networking may be simplified, and the influence between monitoring display screens is reduced.
Description
Technical field
The present invention relates to technical field of video monitoring, particularly relate to a kind of monitoring display screen, aobvious control terminal,
Interface conversion equipment and video wall group network system.
Background technology
Along with the development of Network Video Surveillance technology, it is gradually extensive that front network video camera is layouted, monitoring
Video height Qinghua trend is more and more obvious, and rear end monitor video wall display screen quantity also gets more and more.
Refer to Fig. 1, for the structural representation of a kind of typical video wall group network system, wherein, in order to
Solve the allocation problem of monitoring display screen in video wall networking engineering, monitoring display screen design two serial ports,
One inputs for serial ports, and one exports for serial ports, and aobvious control terminal is sent configuration information to by Serial Port Line
One of monitoring display screen, passes between monitoring display screen and monitoring display screen by the way of series connection step by step
Pass configuration information.
Additionally, send aobvious problem to solve high definition, monitoring display screen generally has HDMI (High
Definition Multimedia Interface, HDMI) interface or DVI (Digital
Visual Interface, digital visual interface) interface, can support that 1080p accesses, aobvious control terminal is pressed
Requirement according to monitoring display screen quantity exports HDMI or DVI way.
But practice finds, in above-mentioned video wall networking plan, the serial ports on each monitoring display screen needs
Series connection, cable is too much, networking too complex, and due between each monitoring display screen configuration information by string
The mode of connection is transmitted, and upstream monitoring display screen serial ports loosens can affect downstream monitoring display screen configuration.
Summary of the invention
The present invention provides a kind of monitoring display screen, aobvious control terminal, interface conversion equipment and video wall networking system
System, to solve networking too complex in existing video wall networking plan, and can be mutually between monitoring display screen
The problem of impact.
According to the first aspect of the invention, it is provided that a kind of monitoring display screen, including screen display master chip and display
Panel plate, also includes signal receiving unit and signal processing unit；Wherein:
Described signal receiving unit, the gigabit of simplifying sent by twisted-pair feeder for receiving aobvious control terminal is situated between
Matter stand-alone interface RGMII signal, and described RGMII signal is sent to signal processing unit；
Described signal processing unit, is used for resolving described RGMII signal, obtain including audio frequency and video
Data and monitoring display screen configuration information, be converted to universal asynchronous by described monitoring display screen configuration information
Receiving-transmitting transmitter UART signal, is converted to minimize differential signal transmission by described audio, video data
TMDS signal, and described UART signal and TMDS signal are sent to described screen display master chip；
Described screen display master chip, for described display screen panel being configured according to described UART signal,
And on display screen panel upon configuration, show described TMDS signal.
According to the second aspect of the invention, it is provided that a kind of aobvious control terminal, including signal acquiring unit, letter
Number processing unit and signal transmitting unit；Wherein:
Described signal acquiring unit, is used for obtaining monitoring display screen configuration information and audio, video data, including
One configuration information acquiring unit and at least one audio, video data acquiring unit, wherein, described configuration
Information acquisition unit is used for obtaining monitoring display screen configuration information, and described audio, video data acquiring unit is used for
Obtain audio, video data；
Described signal processing unit, for filling described monitoring display screen configuration information and audio, video data
Control in mac frame to media interviews, and be filled with display screen configuration information and audio, video data by described
Mac frame be sent to described signal with the form simplifying Gigabit Media stand-alone interface RGMII signal and send out
Send unit；
Described signal transmitting unit, for being sent to the prison of correspondence by twisted-pair feeder by described RGMII signal
Control display screen.
According to the third aspect of the invention we, it is provided that a kind of interface conversion equipment, including: serial port connector,
At least one HDMI HDMI/ digital visual interface DVI connector, field-programmable
Gate array FPGA chip, at least one gigabit Ethernet PHY chip, Ethernet transformator
And RJ45 adapter；Wherein:
Described serial port connector, for connecting the serial port connector of the aobvious control terminal of tradition；
Described HDMI/DVI adapter, for connecting the HMI/DVI adapter of the aobvious control terminal of tradition；
Described fpga chip, for showing reception control terminal by described serial port connector from described tradition
Monitoring display screen configuration information, shows reception sound control terminal by described HDMI/DVI adapter from tradition
Video data；Described monitoring display screen configuration information and described audio, video data are filled into media interviews control
In mac frame processed, and by the described mac frame of display screen configuration information and audio, video data that is filled with essence
The form of letter Gigabit Media stand-alone interface RGMII signal is sent to gigabit Ethernet PHY chip, by
Described gigabit Ethernet PHY chip and described Ethernet transformator to described RGMII signal at
Reason；
Described RJ45 adapter, for by twisted-pair feeder by described gigabit Ethernet PHY chip and with
RGMII signal after too net transformator processes is sent to the monitoring display screen of correspondence；Wherein, described gigabit
The quantity of ethernet PHY chip, Ethernet transformator and RJ45 adapter is identical.
According to the fourth aspect of the invention, it is provided that a kind of video wall group network system, including above-mentioned monitoring display
Screen, and above-mentioned aobvious control terminal；Wherein:
Described aobvious control terminal is connected with described monitoring display screen by twisted-pair feeder.
According to the fifth aspect of the invention, it is provided that a kind of video wall group network system, including above-mentioned monitoring display
Screen, the aobvious control terminal of tradition, and above-mentioned interface conversion equipment；
The serial port connector of described interface conversion equipment shows the string of control terminal by serial ports cable and described tradition
Mouth adapter connects；
The HDMI/DVI adapter of described interface conversion equipment is by HDMI/DVI cable and described tradition
The HDMI/DVI adapter of aobvious control terminal connects；
Described interface conversion equipment is connected with described monitoring display screen by twisted-pair feeder.
Applying technical scheme disclosed by the invention, by serial ports and HDMI/DVI mouth being merged, aobvious control is eventually
End uses twisted-pair feeder to be connected with each monitoring display screen directly or through interface convertor respectively, and this twisted-pair feeder is not
Only transmit audio, video data, it is also possible to for each monitoring display screen individual transmission monitoring display screen configuration letter
Breath, simplifies the wiring of video wall networking, and reduces the impact between each monitoring display screen.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of typical video wall group network system；
Fig. 2 A is the structural representation of a kind of tradition monitoring display screen；
Fig. 2 B is the structural representation that a kind of tradition shows control terminal；
Fig. 3 is the structural representation of a kind of monitoring display screen that the embodiment of the present invention provides；
Fig. 4 is the structural representation of a kind of aobvious control terminal that the embodiment of the present invention provides；
Fig. 5 is the structural representation of a kind of interface conversion equipment that the embodiment of the present invention provides；
Fig. 6 is the structural representation of a kind of video wall group network system that the embodiment of the present invention provides；
Fig. 7 is the structural representation of the another kind of video wall group network system that the embodiment of the present invention provides.
Detailed description of the invention
For the technical scheme making those skilled in the art be more fully understood that in the embodiment of the present invention, below
First to monitoring display screen of the prior art (referred to herein as tradition monitoring display screen) and aobvious control terminal (this
Show control terminal referred to herein as tradition) structure be briefly described.
Refer to Fig. 2 A, for the structural representation of a kind of tradition monitoring display screen, as shown in Figure 2 A, pass
System monitoring display screen can include serial port connector, HDMI/DVI adapter, screen display master chip and show
Display screen panel；Wherein:
Tradition monitoring display screen uses HDMI/DVI to carry out video access, uses serial ports to carry out configuration and accesses；
Serial Port Line connects serial port connector, by URAT (Universal Asynchronous
Receiver/Transmitter, universal asynchronous receiving-transmitting transmitter) signal (monitoring display screen configuration information)
Accessing screen display master chip, HDMI/DVI cable connects HDMI/DVI adapter, by TMDS
(Transition-minimized differential signaling, minimize differential signal transmission) signal (sound
Video data) access screen display master chip, screen display master chip realize control and the display of display screen panel.
Refer to Fig. 2 B, show the structural representation of control terminal, as shown in Figure 2 B, tradition for a kind of tradition
Aobvious control terminal can include configuration information acquiring unit, audio, video data acquiring unit, video display chip,
Serial port connector and HDMI/DVI adapter；Wherein:
Video signal (audio, video data) is accessed and regards by the audio, video data acquiring unit of the aobvious control terminal of tradition
Frequently display chip, is converted into TMDS signal through video display chip, connects finally by HDMI/DVI
Device is sent to show on cable, and then is sent to the monitoring display screen of correspondence；Display screen configuration information then by
Configuration information acquiring unit is sent on serial ports cable with the form of UART signal through serial port connector, enters
And it is sent to the monitoring display screen of correspondence.
Understandable in order to enable the above-mentioned purpose of the embodiment of the present invention, feature and advantage to become apparent from, below
In conjunction with accompanying drawing, technical scheme in the embodiment of the present invention is described in further detail.
Refer to the structural representation of a kind of monitoring display screen that Fig. 3, Fig. 3 provide for the embodiment of the present invention,
As it is shown on figure 3, this monitoring display screen is except including screen display master chip 310 and display screen panel 320
Outside, it is also possible to including: signal receiving unit 330 and signal processing unit 340；Wherein:
Described signal receiving unit 330, for receiving the RGMII that aobvious control terminal is sent by twisted-pair feeder
(Reduced Gigabit Media Independent Interface, simplify Gigabit Media stand-alone interface)
Signal, and described RGMII signal is sent to signal processing unit；
Described signal processing unit 340, is used for resolving described RGMII signal, obtain including sound
Video data and monitoring display screen configuration information, be converted to described monitoring display screen configuration information
UART signal, is converted to TMDS signal by described audio, video data, and by described UART signal and
TMDS signal is sent to described screen display master chip 310；
Described screen display master chip 310, is used for according to described UART signal described display screen panel 320
Configure, and on display screen panel 320 upon configuration, show described TMDS signal.
In an alternative embodiment, signal receiving unit 330 may include that RJ45 adapter 331, ether
Net transformator 332 and gigabit Ethernet PHY (physical layer) chip 333；Wherein:
RJ45 adapter 331, for being connected with the RJ45 adapter of aobvious control terminal by twisted-pair feeder, is connect
Receive the RGMII signal that aobvious control terminal is sent by twisted-pair feeder, and RMGII signal is sent to Ethernet
Transformator 332, by Ethernet transformator 332 and gigabit Ethernet PHY chip 333 to RMGII
Signal processes.
In an alternative embodiment, signal processing unit 340 may include that FPGA (Field-
Programmable Gate Array, field programmable gate array) chip 341 and protocol conversion chip 342；
Wherein:
Fpga chip 341, for resolving the RMGII after gigabit Ethernet PHY chip 333 processes
Signal, obtain including audio, video data and monitoring display screen configuration information, by monitoring display screen
Configuration information is converted to UART signal, and UART signal is sent to screen display master chip 310, by sound
Video data is sent to protocol conversion chip 342；
Protocol conversion chip 342, is used for audio, video data by BT (Bit Torrent, bit stream) 1120
Signal is converted to TMDS signal, and described TMDS signal is sent to described screen display master chip.
In the embodiment of the present invention, monitoring display screen can receive aobvious control terminal by RJ45 adapter 331
The RGMII signal sent by twisted-pair feeder, and this RGMII signal is sent to Ethernet transformator 332
Process with gigabit Ethernet PHY chip 333.
Wherein, Ethernet transformator 332 and gigabit Ethernet PHY chip 333 are to RGMII signal
Process implements the associated description that may refer in existing related protocol, and the embodiment of the present invention is to this not
Repeat.
After RGMII signal is processed by gigabit Ethernet PHY chip 333, after can processing
RGMII signal is sent to fpga chip 341；Fpga chip 341 receive this RGMII signal it
After, this RGMII signal can be resolved, obtain including audio, video data and monitoring aobvious
Display screen configuration information.
For monitoring display screen configuration information, fpga chip 341 can directly convert thereof into UART
Signal, and it is sent to screen display master chip 310；
For audio, video data (BT1120 signal), fpga chip 341 can send it to agreement
Conversion chip 342；After protocol conversion chip 342 receives this audio, video data, can be by it by BT1120
Signal is converted to TMDS signal, and is sent to screen display master chip 310.
Screen display master chip 310 receives UART signal and the protocol conversion that fpga chip 341 sends
After the TMDS signal that chip 342 sends, according to this UART signal, display screen panel 320 can be entered
Row configuration, and on display screen panel 320 upon configuration, show the TMDS signal received.
Refer to the structural representation of a kind of aobvious control terminal that Fig. 4, Fig. 4 provide for the embodiment of the present invention,
As shown in Figure 4, this aobvious control terminal can include signal acquiring unit 410, signal processing unit 420 with
And signal transmitting unit 430；Wherein:
Signal acquiring unit 410, is used for obtaining monitoring display screen configuration information and audio, video data, including
One configuration information acquiring unit 411 and at least one audio, video data acquiring unit 412, wherein,
Described configuration information acquiring unit is used for obtaining monitoring display screen configuration information, and described audio, video data obtains
Unit is used for obtaining audio, video data；
Signal processing unit 420, for being filled into monitoring display screen configuration information and audio, video data
In MAC (Media Access Control, media interviews control) frame, and will be filled with display screen configuration
The mac frame of information and audio, video data is sent to signal transmitting unit with the form of RGMII signal；
Signal transmitting unit 430, shows for RGMII signal being sent to corresponding monitoring by twisted-pair feeder
Display screen.
In an alternative embodiment, signal processing unit 420 may include that fpga chip 421；Wherein:
Fpga chip 421, for being filled into MAC by monitoring display screen configuration information and audio, video data
In frame, and will be filled with the mac frame of display screen configuration information and audio, video data with RGMII signal
Form is sent to signal transmitting unit 430.
In an alternative embodiment, signal transmitting unit 430 may include that at least one gigabit Ethernet PHY
Chip 431, Ethernet transformator 432 and RJ45 adapter 433；Wherein:
RJ45 adapter 433, for by twisted-pair feeder by gigabit Ethernet PHY chip 431 and with
Too net transformator 432 process after RGMII signal be sent to correspondence monitoring display screen, described gigabit with
Too net PHY chip 431, Ethernet transformator 432 and RJ45 adapter 433 quantity identical.
In an alternative embodiment, described fpga chip 421, can be specifically for determining that transmission single frames is treated
The first object quantity of the first mac frame needed for transmitting video image, the second target of the second mac frame
Quantity, and according to supporting the maximum amount of data of transmission, a MAC of first object quantity in single frame time
The total length of the second mac frame of frame and the second destination number determines the length of the 3rd mac frame, and will
The monitoring display screen configuration information that one frame video image to be transmitted is corresponding is filled into the 3rd mac frame, and will
The 3rd mac frame that is filled with display screen configuration information, the first mac frame being filled with audio, video data with
And the second mac frame being filled with audio, video data is sent to signal successively with the form of RGMII signal and sends out
Send unit 430；
Wherein, the first mac frame and the second mac frame are used for transmitting audio, video data, the 3rd mac frame
Video field in transmitting, monitoring display screen configuration information, the first mac frame of first object quantity
In second mac frame of total length and the second destination number, the total length sum of video field is treated equal to single frames
The size of transmitting video image, the 3rd mac frame, first mac frame and second of first object quantity
The total length of the second mac frame three of destination number is less than above-mentioned maximum amount of data, the second number of targets
Amount is less than or equal to 1；Filling the 3rd mac frame after monitoring display screen configuration information is a frame video to be transmitted
The initial bag of image.
In the embodiment of the present invention, it is aobvious that aobvious control terminal can obtain monitoring by configuration information acquiring unit 411
Display screen configuration information, and obtain audio, video data by audio, video data acquiring unit 412.
After configuration information acquiring unit 411 gets monitoring display screen configuration information, can will get
Monitoring display screen configuration information be sent to fpga chip 421；In like manner, audio, video data acquiring unit
The audio, video data got can also be sent to fpga chip 421 by 412.
After fpga chip 421 receives monitoring display screen configuration information and audio, video data, can be by
Receive monitoring display screen configuration information and audio, video data is filled in mac frame, and will be filled with prison
The mac frame of control display screen configuration information and audio, video data is sent to gigabit with the form of GRMII signal
Ethernet physical layer PHY chip 431.
What deserves to be explained is, in embodiments of the present invention, RJ45 adapter 433 (or gigabit Ethernet PHY
Chip 431 or Ethernet transformator 432) match with the quantity of audio, video data acquiring unit, aobvious control
The audio, video data that terminal is got by audio, video data acquiring unit, can be by corresponding gigabit
After ethernet PHY chip 431 and Ethernet transformator 432 process, by corresponding RJ45 even
Connect device 433 and be sent to the monitoring display screen of correspondence.
Additionally, for a frame monitor video, when aobvious control terminal needs to send it to the monitoring display of correspondence
During screen, aobvious control terminal needs first to be sent to by monitoring display screen configuration information corresponding for this frame monitor video
Corresponding monitoring display screen, is then sent to the prison of correspondence by audio, video data corresponding for this frame monitor video
Control display screen, to ensure the sound that monitoring display screen can correctly carry out display screen configuration and display receives
Video data.
Correspondingly, in embodiments of the present invention, fpga chip 421 is by monitoring display screen configuration information
And audio, video data be filled into mac frame and be sent to correspondence monitoring display screen time, can will fill
There is mac frame the initiateing as this frame of video of the monitoring display screen configuration information that a frame monitor video is corresponding
Bag is sent to the monitoring display screen of correspondence, audio, video data corresponding by being respectively filled with this frame video the most again
Mac frame be sent to correspondence monitoring display screen.
Preferably, in embodiments of the present invention, mac frame can be by the mesh in standard ethernet mac frame
The fields such as mark address, source address, type and data are used for filling monitoring display screen as custom field
Configuration information and audio, video data.
For example, it is possible to the destination address of standard ethernet mac frame, source address and type field are made
For custom field 1, data field is as custom field 2；Wherein, this custom field 2 can be made
It is used for filling monitoring display screen configuration information for monitoring display screen configuration information field, or as video field
For filling video data；Custom field 1 then may be used for filling information field and/or audio field.
Wherein, the information field of the mac frame carrying monitoring display screen configuration information can include for
Represent that this mac frame is the field that frame of video initiates bag, and be used for representing monitoring display screen configuration information
The field of the effective word joint number of field；The information field of the mac frame carrying audio, video data can include
For representing that this mac frame is that non-video frame initiates the field of bag, for representing the effective word of audio field
The field of joint number, for representing the field of the effective word joint number of video field, for representing audio index number
Field and for representing the field of video index number.
In the embodiment of the present invention, it is contemplated that when carrying out HD video transmission, video transmission efficiency needs to be higher than
Corresponding video transmission efficiency threshold value, the Lossless transport of guarantee HD video.
For example, with 1080p (a kind of video display format)@30 (30 frames per second) HD video
As a example by, its effective bandwidth required is 1920*1080*30*16=0.995328Gbps (Gigabits per second),
I.e. when by gigabit Ethernet transmission 1080p@30 HD video, if it is desired to reach Lossless transport, need
Video transmission efficiency is wanted to reach 99.5328% (0.995328/1*100%=99.5328%).
Correspondingly, in embodiments of the present invention, for the first mac frame for transmitting audio, video data,
Fpga chip 421 can be true according to the length of the first mac frame and default video transmission efficiency threshold value
Determine the length of video field in mac frame, the lowest to ensure the video transmission efficiency that the first mac frame is corresponding
In default video transmission efficiency threshold value.
For example, it is possible to determined by below equation and meet the MAC presetting video transmission efficiency threshold value
The length of video field in frame:
Wherein, X is the length of video field in the first mac frame, unit: byte number；
Y is the length of custom field 2 in the first mac frame, unit: byte number；
38 is intrinsic field (frame gap, lead code, SFD, custom field 1, CRC) field
Length, unit: byte number；
38+Y is the length of the first mac frame.
In determining the first mac frame after the length of video field, can be according to single frames figure to be transmitted
The length of video field in the size of picture, the first mac frame, determines transmission single frames video image to be transmitted
How many first mac frames are needed to carry.
As an example it is assumed that video image to be transmitted is the video image of 1080p, in the first mac frame
A length of 9000 bytes (a length of 9038 bytes of the first mac frame) of video field, then single frames is treated
The size of transmission image is 1920*1080*2=4147200 byte, and carrying single frames image to be transmitted needs
The quantity of the first mac frame is 4147200/9000=460.8, i.e. needs 461 the first mac frames
Just can complete to carry a frame video image to be transmitted, but these 461 first mac frames can include video
There is the first idle mac frame in field.
Correspondingly, in embodiments of the present invention, fpga chip 421 can regard according to single frame transmission image
Frequently the length of video field in the size of image and the first mac frame, determines transmission single frames figure to be transmitted
First object quantity and the second number of targets of the second mac frame as the first mac frame needed for correspondence
Amount.Wherein, the total length of video field and the second number of targets in the first mac frame of first object quantity
In second mac frame of amount, the total length sum of video field is equal to the size of single frames video image to be transmitted,
Second destination number is less than or equal to 1.
In embodiments of the present invention, for transmitting the first mac frame and the 2nd MAC of audio, video data
The length of frame sound intermediate frequency field can according to preset audio sample rate threshold value, mac frame length and system
The information such as big bandwidth determine.
Concrete, preset sample rate threshold requirement to ensure that audio sample rate meets, need first to ensure into
During row single frame transmission (the most whole network only transmits a mac frame), the audio frequency that this mac frame is corresponding is adopted
Sample rate disclosure satisfy that default sample rate threshold requirement.
Correspondingly, in order to determine the minimum length of mac frame sound intermediate frequency field, need first to determine that single frames passes
Single byte transmission bandwidth time defeated, wherein, during this single frame transmission, single byte transmission bandwidth can be by following
Formula determines:
The total length of single byte transmission bandwidth=maximum bandwidth/mac frame during single frame transmission
After single byte transmission bandwidth when determining single frame transmission, fpga chip 421 can basis
Preset single byte transmission bandwidth when sample rate threshold value and this single frame transmission, determine mac frame sound intermediate frequency
The minimum length of field, wherein, the minimum length of this mac frame sound intermediate frequency field can be by following public affairs
Formula determines:
Single byte transmission belt during the minimum length of audio field=preset audio sample rate threshold value/single frame transmission
Wide
Destination number (the at the mac frame determined needed for transmission one frame video image to be transmitted correspondence
One destination number and the second destination number sum) after, fpga chip 421 can be adopted according to actual audio
Sample rate determines the voice data size that a frame image to be transmitted is corresponding, and fills it into this destination number
In mac frame.
Preferably, in embodiments of the present invention, voice data is filled in the mac frame of destination number
Time need to ensure the MAC that the voice data that a frame image to be transmitted is corresponding is evenly distributed in destination number
In frame.
In the embodiment of the present invention, fpga chip 421 can according to the frame per second of video image to be transmitted and
Maximum bandwidth supports the maximum amount of data of transmission in determining single frame time.
Wherein, support in single frame time that the maximum amount of data of transmission can be determined by below equation:
The frame per second of the maximum amount of data=maximum bandwidth/video image to be transmitted of transmission is supported in single frame time
As an example it is assumed that video to be transmitted is 1080p@30, the frame per second of video image the most to be transmitted is
30Hz, video to be transmitted is transmitted by gigabit Ethernet, i.e. maximum bandwidth is 1Gbps, then single frame time
Interior maximum amount of data=1G/30 bit=1G/ (30*8) byte supporting transmission.
Determine first object quantity corresponding to single frames video image to be transmitted the first mac frame and
In second mac frame of the second destination number, and the single frame time supported of the system that determines, transmission is
After big data quantity, fpga chip 421 can according to this maximum amount of data, the of first object quantity
The total length of both second mac frames of one mac frame and the second destination number, determines for transmitting prison
The length of the 3rd mac frame of control display screen configuration information, to ensure the 3rd mac frame, first object number
The total length of the first mac frame of amount and the second mac frame three of the second destination number is less than this
Big data quantity.
Wherein, it is contemplated that monitoring display screen configuration comes into force based on full frame, needs at a frame video image
Corresponding audio, video data configures complete before arriving, the monitoring display screen that i.e. one frame video image is corresponding is joined
Confidence breath needs the audio, video data corresponding prior to this frame video image to be sent to receiving terminal, to ensure to receive
After end first can complete monitoring display screen configuration according to the monitoring display screen configuration information received, aobvious in monitoring
Display screen is play the audio, video data of correspondence.
Correspondingly, in embodiments of the present invention, when needs carry out audio, video data transmission, for a frame
Video image to be transmitted, monitoring corresponding for video image to be transmitted for this frame can be shown by fpga chip 421
Display screen configuration information is filled into the custom field of the 3rd mac frame, and will fill monitoring display screen configuration
The 3rd mac frame after information is as the initial bag of this frame video image to be transmitted.
In the embodiment of the present invention, after gigabit Ethernet PHY chip 431 receives RGMII signal, can
So that this RGMII signal is processed, and will process after RGMII signal be sent to Ethernet transformation
Device 432, Ethernet transformator 432 be sent to RJ45 adapter 433 after processing.
Wherein, RGMII signal is entered by gigabit Ethernet PHY chip 431 and Ethernet transformator 432
What row processed implements the associated description that may refer in existing related protocol, and the embodiment of the present invention is to this
Do not repeat.
After RJ45 adapter 433 receives the RGMII signal after process, can pass through twisted-pair feeder should
RGMII signal after process is sent to the monitoring display screen of correspondence.
Refer to the structural representation of a kind of interface conversion equipment that Fig. 5, Fig. 5 provide for the embodiment of the present invention
Figure, as it is shown in figure 5, this interface conversion equipment may include that serial port connector 510, at least one
HDMI/DVI adapter 520, fpga chip 530, at least one gigabit Ethernet PHY chip 540,
Ethernet transformator 550 and RJ45 adapter 560；Wherein:
Serial port connector 510, for connecting the serial port connector of the aobvious control terminal of tradition；
HDMI/DVI adapter 520, for connecting the HMI/DVI adapter of the aobvious control terminal of tradition；
Fpga chip 530, for showing reception monitoring control terminal by serial port connector 510 from tradition
Display screen configuration information, shows reception audio frequency and video control terminal by HDMI/DVI adapter 520 from tradition
Data；Monitoring display screen configuration information and audio, video data are filled in mac frame, and will be filled with
The mac frame of display screen configuration information and audio, video data with the form of RGMII signal be sent to gigabit with
Too net PHY chip 540 is right by gigabit Ethernet PHY chip 540 and Ethernet transformator 550
RGMII signal processes；
RJ45 adapter 560, for by twisted-pair feeder by gigabit Ethernet PHY chip 540 and with
RGMII signal after too net transformator 550 processes is sent to the monitoring display screen of correspondence；Wherein, gigabit
Ethernet PHY chip 540, Ethernet transformator 550 and RJ45 adapter 560 quantity identical.
In the embodiment of the present invention, except transforming by tradition is shown control terminal so that it is support logical
Cross outside the transmission that twisted-pair feeder is monitored display screen configuration information and audio, video data, it is also possible to pass through pin
Tradition is shown the mode of interface conversion equipment corresponding to control terminal design, makes the aobvious control terminal of tradition to lead to
Cross twisted-pair feeder and be monitored the transmission of display screen configuration information and audio, video data.
Concrete, in embodiments of the present invention, interface conversion equipment can pass through serial port connector 510 respectively
With serial port connector and the HDMI/DVI adapter that HDMI/DVI adapter 520 and tradition show control terminal
It is connected, and shows control terminal by serial port connector 510 and HDMI/DVI adapter 520 from tradition respectively
Middle reception monitoring display screen configuration information and audio, video data.
Further, the fpga chip 530 in interface conversion equipment can will show in control terminal from tradition
The monitoring display screen configuration information received and audio, video data are filled in mac frame, and by this filling
The mac frame having display screen configuration information and audio, video data is sent to gigabit with the form of RGMII signal
Ethernet PHY chip 540, gigabit Ethernet PHY chip 540, after processing, be then forwarded to ether
Net transformator 550 processes.
What deserves to be explained is, in embodiments of the present invention, monitoring display screen is configured by fpga chip 530
What information and audio, video data were filled in mac frame implement may refer in above-mentioned aobvious control terminal
The relevant treatment of fpga chip 421, the embodiment of the present invention does not repeats them here.
Wherein, RGMII signal is entered by gigabit Ethernet PHY chip 431 and Ethernet transformator 432
What row processed implements the associated description that may refer in existing related protocol, and the embodiment of the present invention is to this
Do not repeat.
For the RGMII signal after processing, RJ45 adapter 560 can be sent to by twisted-pair feeder
Give corresponding monitoring display screen.
What deserves to be explained is, in embodiments of the present invention, RJ45 adapter 560 (or gigabit Ethernet PHY
Chip 540 or Ethernet transformator 550) match with the quantity of HDMI/DVI adapter, interface turns
The audio, video data that exchange device is received by HDMI/DVI, can be by corresponding gigabit Ethernet
After PHY chip 540 and Ethernet transformator 550 process, by corresponding RJ45 adapter 560
It is sent to the monitoring display screen of correspondence.
The structure referring to a kind of video wall group network system that Fig. 6, Fig. 6 provide for the embodiment of the present invention is shown
Being intended to, as shown in Figure 6, this video wall group network system can include aobvious control terminal 610 and at least one prison
Control display screen 620；Wherein:
Aobvious control terminal 610 can be for the aobvious control terminal shown in Fig. 4；
Monitoring display screen 620 can be for the monitoring display screen shown in Fig. 3；
Wherein, aobvious control terminal 610 is connected with monitoring display screen 620 by twisted-pair feeder.
In the embodiment of the present invention, show the audio, video data between control terminal and monitoring display screen and monitoring display
Screen configuration information is all transmitted by twisted-pair feeder, and physics transmitting-receiving mouth is RJ45 interface；Twisted-pair feeder is not
Only transmission video signal, is simultaneous for each monitoring display screen individual transmission monitoring display screen configuration information.
Refer to the structure of the another kind of video wall group network system that Fig. 7, Fig. 7 provide for the embodiment of the present invention
Schematic diagram, as it is shown in fig. 7, this video wall group network system can include aobvious control terminal 710, interface conversion
Equipment 720 and at least one monitoring display screen 730；Wherein:
Aobvious control terminal 710 can be the aobvious control terminal of tradition；
Interface conversion equipment 720 can be for the interface conversion equipment shown in Fig. 5；
Monitoring display screen 730 can be for the monitoring display screen shown in Fig. 3；
Wherein, the serial port connector of interface conversion equipment 720 is by serial ports cable and aobvious control terminal 710
Serial port connector connects；
The HDMI/DVI adapter of interface conversion equipment 720 is by HDMI/DVI cable and aobvious control terminal
The HDMI/DVI adapter of 710 connects；
Interface conversion equipment 720 is connected with monitoring display screen 730 by twisted-pair feeder.
In the embodiment of the present invention, show the audio, video data between control terminal and monitoring display screen and monitoring display
Screen configuration information is all transmitted by twisted-pair feeder, and physics transmitting-receiving mouth is RJ45 interface and (passes through interface
Conversion equipment carries out interface conversion)；Twisted-pair feeder not only transmission video signal, is simultaneous for each monitoring display
Screen individual transmission monitoring display screen configuration information.
By above description it can be seen that in embodiments of the present invention, by by serial ports and HDMI/DVI
Mouth merges, and aobvious control terminal uses twisted-pair feeder with each monitoring display screen even respectively directly or through interface convertor
Connecing, this twisted-pair feeder not only transmits audio, video data, it is also possible to supervise for each monitoring display screen individual transmission
Control display screen configuration information, simplifies the wiring of video wall networking, and reduces between each monitoring display screen
Impact；Furthermore, it is possible to directly carry out long-distance video signal transmission by twisted-pair feeder, reduce video
The cost of wall networking.
Those skilled in the art, after considering description and putting into practice invention disclosed herein, will readily occur to this
Other embodiment of invention.The application is intended to any modification, purposes or the adaptability of the present invention
Change, these modification, purposes or adaptations are followed the general principle of the present invention and include this
Bright undocumented common knowledge in the art or conventional techniques means.Description and embodiments only by
Being considered as exemplary, true scope and spirit of the invention are pointed out by claim below.
It should be appreciated that the invention is not limited in described above and illustrated in the accompanying drawings accurately
Structure, and various modifications and changes can carried out without departing from the scope.The scope of the present invention is only by institute
Attached claim limits.
Claims (10)
1. a monitoring display screen, including screen display master chip and display screen panel, it is characterised in that described
Monitoring display screen also includes: signal receiving unit and signal processing unit；Wherein:
Described signal receiving unit, the gigabit of simplifying sent by twisted-pair feeder for receiving aobvious control terminal is situated between
Matter stand-alone interface RGMII signal, and described RGMII signal is sent to signal processing unit；
Described signal processing unit, is used for resolving described RGMII signal, obtain including audio frequency and video
Data and monitoring display screen configuration information, be converted to universal asynchronous by described monitoring display screen configuration information
Receiving-transmitting transmitter UART signal, is converted to minimize differential signal transmission by described audio, video data
TMDS signal, and described UART signal and TMDS signal are sent to described screen display master chip；
Described screen display master chip, for described display screen panel being configured according to described UART signal,
And on display screen panel upon configuration, show described TMDS signal.
Monitoring display screen the most according to claim 1, it is characterised in that described signal receiving unit
Including: RJ45 adapter, Ethernet transformator and gigabit Ethernet PHY chip；Wherein:
Described RJ45 adapter, for being connected with the RJ45 adapter of aobvious control terminal by twisted-pair feeder, is connect
Receive described aobvious control terminal and simplify Gigabit Media stand-alone interface RGMII signal by what twisted-pair feeder sent, and
Described RMGII signal is sent to described Ethernet transformator, by described Ethernet transformator and gigabit
Described RMGII signal is processed by ethernet PHY chip.
Monitoring display screen the most according to claim 2, it is characterised in that described signal processing unit
Including: on-site programmable gate array FPGA chip and protocol conversion chip；Wherein:
Described fpga chip, for resolving the RMGII after described gigabit Ethernet PHY chip processes
Signal, obtain including audio, video data and monitoring display screen configuration information, described monitoring is shown
Display screen configuration information is converted to UART signal, and described UART signal is sent to the main core of described screen display
Sheet, is sent to described protocol conversion chip by described audio, video data；
Described protocol conversion chip, for being changed described audio, video data by bit stream BT1120 signal
For TMDS signal, and described TMDS signal is sent to described screen display master chip.
4. an aobvious control terminal, it is characterised in that including: signal acquiring unit, signal processing unit with
And signal transmitting unit；Wherein:
Described signal acquiring unit, is used for obtaining monitoring display screen configuration information and audio, video data, including
One configuration information acquiring unit and at least one audio, video data acquiring unit, wherein, described configuration
Information acquisition unit is used for obtaining monitoring display screen configuration information, and described audio, video data acquiring unit is used for
Obtain audio, video data；
Described signal processing unit, for filling described monitoring display screen configuration information and audio, video data
Control in mac frame to media interviews, and be filled with display screen configuration information and audio, video data by described
Mac frame be sent to described signal with the form simplifying Gigabit Media stand-alone interface RGMII signal and send out
Send unit；
Described signal transmitting unit, for being sent to the prison of correspondence by twisted-pair feeder by described RGMII signal
Control display screen.
Aobvious control terminal the most according to claim 4, it is characterised in that described signal processing unit bag
Include: on-site programmable gate array FPGA chip；Wherein:
Described fpga chip, for being filled into described monitoring display screen configuration information and audio, video data
Media interviews control in mac frame, and by described display screen configuration information and the audio, video data of being filled with
Mac frame is sent to described signal with the form simplifying Gigabit Media stand-alone interface RGMII signal and sends
Unit.
Aobvious control terminal the most according to claim 5, it is characterised in that described signal transmitting unit bag
Include: at least one gigabit Ethernet PHY chip, Ethernet transformator and RJ45 adapter；
Wherein:
Described RJ45 adapter, for by twisted-pair feeder by described gigabit Ethernet PHY chip and with
RGMII signal after too net transformator processes is sent to the monitoring display screen of correspondence；Wherein, described gigabit
The quantity of ethernet PHY chip, Ethernet transformator and RJ45 adapter is identical.
Aobvious control terminal the most according to claim 5, it is characterised in that
Described fpga chip, specifically for determining first needed for transmission single frames video image to be transmitted
The first object quantity of mac frame, the second destination number of the second mac frame, and according in single frame time
Support maximum amount of data, the first mac frame of first object quantity and second destination number of transmission
The total length of the second mac frame determines the length of the 3rd mac frame, and by a frame video image pair to be transmitted
The monitoring display screen configuration information answered is filled into the 3rd mac frame, and will be filled with display screen configuration information
The 3rd mac frame, be filled with the first mac frame of audio, video data and be filled with audio, video data
Second mac frame is sent to described signal transmitting unit successively with the form of RGMII signal；
Wherein, the first mac frame and the second mac frame are used for transmitting audio, video data, the 3rd mac frame
Video field in transmitting, monitoring display screen configuration information, the first mac frame of first object quantity
In second mac frame of total length and the second destination number, the total length sum of video field is equal to described list
The size of frame video image to be transmitted, the 3rd mac frame, a MAC of described first object quantity
The total length of the second mac frame three of frame and described second destination number is less than described maximum data
Amount, described second destination number is less than or equal to 1；Fill the 3rd MAC after monitoring display screen configuration information
Frame is the initial bag of a frame video image to be transmitted.
8. an interface conversion equipment, it is characterised in that including: serial port connector, at least one high definition
Clear degree multimedia interface HDMI/ digital visual interface DVI connector, on-site programmable gate array FPGA
Chip, at least one gigabit Ethernet PHY chip, Ethernet transformator and RJ45 connect
Device；Wherein:
Described serial port connector, for connecting the serial port connector of the aobvious control terminal of tradition；
Described HDMI/DVI adapter, for connecting the HMI/DVI adapter of the aobvious control terminal of tradition；
Described fpga chip, for showing reception control terminal by described serial port connector from described tradition
Monitoring display screen configuration information, shows reception sound control terminal by described HDMI/DVI adapter from tradition
Video data；Described monitoring display screen configuration information and described audio, video data are filled into media interviews control
In mac frame processed, and by the described mac frame of display screen configuration information and audio, video data that is filled with essence
The form of letter Gigabit Media stand-alone interface RGMII signal is sent to gigabit Ethernet PHY chip, by
Described gigabit Ethernet PHY chip and described Ethernet transformator to described RGMII signal at
Reason；
Described RJ45 adapter, for by twisted-pair feeder by described gigabit Ethernet PHY chip and with
RGMII signal after too net transformator processes is sent to the monitoring display screen of correspondence；Wherein, described gigabit
The quantity of ethernet PHY chip, Ethernet transformator and RJ45 adapter is identical.
9. a video wall group network system, it is characterised in that include described in any one of claim 1-3
Monitoring display screen, and the aobvious control terminal described in any one of claim 4-7；Wherein:
Described aobvious control terminal is connected with described monitoring display screen by twisted-pair feeder.
10. a video wall group network system, it is characterised in that include described in any one of claim 1-3
Monitoring display screen, the aobvious control terminal of tradition, and the interface conversion equipment described in claim 8；
The serial port connector of described interface conversion equipment shows the string of control terminal by serial ports cable and described tradition
Mouth adapter connects；
The HDMI/DVI adapter of described interface conversion equipment is by HDMI/DVI cable and described tradition
The HDMI/DVI adapter of aobvious control terminal connects；
Described interface conversion equipment is connected with described monitoring display screen by twisted-pair feeder.
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| CN201610298982.6A CN105915848B (en) | 2016-05-06 | 2016-05-06 | Monitoring display screen, display and control terminal, interface conversion equipment and video wall group network system |
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| CN201610298982.6A CN105915848B (en) | 2016-05-06 | 2016-05-06 | Monitoring display screen, display and control terminal, interface conversion equipment and video wall group network system |
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| US20120169831A1 (en) * | 2006-03-15 | 2012-07-05 | Nietfeld Paul G | Home Videoconferencing System |
| CN101098213A (en) * | 2007-06-18 | 2008-01-02 | 中兴通讯股份有限公司 | Data transmission method and system |
| US20100094931A1 (en) * | 2008-10-14 | 2010-04-15 | Ripcode, Inc. | System and method for progressive delivery of media content |
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